Isaac w



"gotten grates igistgni @ffi Letters Patent No. 76,332, dated April '7,1868.

IMPROVEMENT IN OXQYOKES.

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TO .ALL PERSONS TO W I-IOlllv THESE PRESENTS MAY COME:

.Be-it known that I, ISAAC W. LITTLE, of Newhury, in the county ofEssex, and State of Massachusetts,

have made anew and useful invention or Improvement in Ox-Yokes; and I dohereby declare the same to, be fully described in the. following sp ifii d resented in the accompanying drawings, of which- Figure 1 is atopview,

Figure is a bottom View,

Figure a front elevati'on, and

Figure 4 is a longitudinal section of a yoke provided with. myinvention. v

In the drawings, Adcnotes a yoke, of common form, provided with twooX-bows, B B.- Instead of forming in the yoke simple roundholes forreception of the legs of the bows, I make it with four slots, (1 an 41,extending down through it v In each 'slot I introduce-a slider, 11,provided with a hole, 0, to receive a leg of the bow, and also withmeans of fiiring or clamping the-said slider in any position in which itmay be placed within the range of its motion, lengthwise of. the slot. II V A I In the drawings, the base part, 11, of each slider, viz, thatpart in which the how-holec is made, extends beyond the sides of theslot, so as to bear against the lower surface of the yoke. A male screw,e', extends upwardfrom the slider, and goes through a plate,f, whichspans the slot, and rests on the. upper surface of the yoke. A nun g,screwed on thescrew e, and down upon the plate f, serves, with suchplate and the part ii, to.

vhold the slider in position. By'means of the slots, the sliders, andthe devices for fixing the sliders in position,

the adjustment of the bow nearer to or farther from the centre of theyoke may be easily effected, whether-it be for arranging the bows atequal or unequaldistances from the'middle or centre of the yoke. To thepolering, D, of the yoke I apply'a, swivel, E, which 'will a'd'mit of'snchpole-ring hei'ng .revolved about the axis of the swivel. The shank,Z, of the swivel passes up through the middle of the yoke, and has ashoulder, m, by

which itis supported on a metallic or bar-spring, F, through-the middleofwhich the shank passes. The said spring or bar is extended'along andagainst the under surface of the yoke, and, at or near its ends, isfastened to the how. This spring, while ser'vingtostrengthen the yoke,or prevent it from breakingat its middle, also answers to relieve theoxen from sudden downward movements of the pole. v

.I am aware that bows havebeen applied "to a yoke, by means of whichthey couldbe adjusted nearer to or farther from each other, or itsmiddle, one example of which is shown ima patentgranted to me in May ofthe year 1854. I therefore make no claim to such in the abstract.

What I do claim is---- A The arrangement and combination of the sliders5, and their clamping-screws or devices, with each ofthe bows B B, andwith slots a a,,formed in the yoke, as set forth. I

ISAAC W. LITTLE.

Witnesses:

R.-H.' EDDY, F. P. HALE,.J1.

